What color light must a fishing vessel show when engaged in fishing at night?

A fishing vessel engaged in fishing at night is required to display a white light in accordance with the International Regulations for Preventing Collisions at Sea (COLREGs). This white light helps to signal its presence to other vessels, allowing them to navigate safely around it.

When a fishing vessel is actively using its nets, lines, or traps, it may also show additional lights such as red or green to indicate its fishing operation; however, the primary requirement is the displaying of a white light. This ensures visibility and communicates that the vessel is engaged in fishing activities.

By adhering to these lighting regulations, fishing vessels can help prevent collisions with other vessels, which is a crucial aspect of maritime safety.